EP2281487B1 - Damping mechanism for folding seats in chairs - Google Patents
Damping mechanism for folding seats in chairs Download PDFInfo
- Publication number
- EP2281487B1 EP2281487B1 EP10171321A EP10171321A EP2281487B1 EP 2281487 B1 EP2281487 B1 EP 2281487B1 EP 10171321 A EP10171321 A EP 10171321A EP 10171321 A EP10171321 A EP 10171321A EP 2281487 B1 EP2281487 B1 EP 2281487B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- damping
- chairs
- towards
- tilting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000013016 damping Methods 0.000 title claims description 26
- 230000007246 mechanism Effects 0.000 title claims description 16
- 238000009499 grossing Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/56—Parts or details of tipping-up chairs, e.g. of theatre chairs
- A47C7/566—Resiliently mounted seat or back-rest
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/12—Theatre, auditorium, or similar chairs
- A47C1/121—Theatre, auditorium, or similar chairs having tipping-up seats
Definitions
- the present invention relates to chairs with a folding structure which are arranged in places for accommodating large audiences of any type and which are generally distributed in parallel rows, proposing a device applicable in chairs of this type, with which the functional features of the tilting arrangement of the seat of the chair are improved.
- the chairs are generally structured with folding solutions of their seats for the purpose of freeing up the space between the rows of chairs when they are not being used.
- a mechanism is proposed as claimed in claim 1 which allows solving in a simple manner the problem of folding the seats of the chairs so that the tilting occurs smoothly and without abruptly bumping against the end stop.
- the proposed mechanism has very simple features for being carried out and applied, having its own identity and preferred character for the function of damping the tilting of the seats in chairs, compared to conventional mechanisms for this function.
- the object of the invention relates to a damping mechanism, intended for smoothing the movement of the tilting seats in chairs towards the vertical folded position for the purpose of preventing said tilting seats from abruptly bumping against the corresponding backrest of the chair.
- Said mechanism can be applied in chairs the seat (1) of which is arranged in an articulated assembly by means of rotating shafts (2), with the possibility of tilting between a horizontal use position and a vertical folded position against the corresponding backrest (3) of the chair, incorporating in relation to said articulated assembly springs (4) which act in the sense of lifting the seat (1) towards the vertical folded position.
- the rotating shafts (2) are fixedly attached to the seat (1) and on each of them there is arranged an eccentric cam (5), incorporated so that it rotates integrally with the corresponding shaft (2), so that when tilting the seat (1) the shafts (2) rotate with it, in turn moving the eccentric cams (5) together in the same rotational movement.
- hydraulic damping pistons (6) In relation to the eccentric cams (5), there are arranged hydraulic damping pistons (6), i.e., they have a rod which can shift axially in movement controlled by a viscous liquid which has to pass through a narrow hole, supporting said damping pistons (6) radially against the outer surface of the respective eccentric cam (5).
- damping mechanism of the invention can be applied in any chair with a tilting seat (1), such as those depicted in Figures 5 and 6 , which are non-limiting examples.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Seats For Vehicles (AREA)
Description
- The present invention relates to chairs with a folding structure which are arranged in places for accommodating large audiences of any type and which are generally distributed in parallel rows, proposing a device applicable in chairs of this type, with which the functional features of the tilting arrangement of the seat of the chair are improved.
- In movie theaters, auditoriums, sports halls or stadiums, and similar enclosures, the arrangement of parallel rows of chairs for the attendees at the acts held in said enclosures to sit is commonplace, this distribution achieving an optimal use of space.
- In this sense, for the purpose of facilitating the passage between the rows, for the users to get in and get out, as well as for cleaning operations, the chairs are generally structured with folding solutions of their seats for the purpose of freeing up the space between the rows of chairs when they are not being used.
- To that respect there are several articulated assembly solutions for the chair seats, so that, when the chair is taken by a user, the weight of the user keeps the seat of the chair in a lowered use position, whereas when the chair is not occupied, the seat automatically tilts to a vertical position against the backrest.
- This solution achieves that when the chairs are not occupied, the seat thereof is automatically folded towards a vertical position in which it does not invade the space in front of the chair, but the folding action of the seat, which is actuated by a spring, occurs abruptly, causing noise and, over time, misalignments of the structure of the chair, in addition to the risk of possibly hitting the users.
- According to the invention, a mechanism is proposed as claimed in
claim 1 which allows solving in a simple manner the problem of folding the seats of the chairs so that the tilting occurs smoothly and without abruptly bumping against the end stop. - An arrangement is thus obtained with which, when the seat of the chair of application tilts, the rotational movement thereof is followed by the eccentric cams which are incorporated in the rotating shafts, forcing the rod of the corresponding damping pistons towards the inside of the damping piston when the tilting of the seat is from the horizontal use position towards the vertical folded position, and allowing the extension of the damping pistons when the tilting of the seat is from the vertical folded position towards the horizontal use position.
- Thus, when the seat of the chair is not occupied in the horizontal use position, it tends to tilt rapidly towards the vertical folded position by the action of springs which act in this sense, but the relationship between the eccentric cam of the rotating shafts and the corresponding damping pistons causes a dampening of the movement, such that the tilting occurs smoothly, reaching the end stop without abruptly hitting it.
- To take the seat from the vertical folded position towards the horizontal use position, it is only necessary to overcome the resistance of the springs which act towards the vertical position, the damping mechanism not exerting resistance in this direction, so that it does not hamper the operation.
- As a result, the proposed mechanism has very simple features for being carried out and applied, having its own identity and preferred character for the function of damping the tilting of the seats in chairs, compared to conventional mechanisms for this function.
-
-
Figure 1 shows an exploded perspective view of a chair with a tilting seat provided with the damping mechanism of the invention. -
Figure 2 shows an exploded perspective view of an enlarged detail of the damping mechanism of the invention in relation to a rotating shaft of the seat of a chair. -
Figure 3 is a perspective view of the assembly of the previous figure assembled, in the folded seat position. -
Figure 4 is a perspective view of the same previous assembly in the use position of the seat. -
Figure 5 shows an example of a module of two folding seat chairs, in which the damping mechanism of the invention is applicable. -
Figure 6 shows another example of a module of two chairs with a folding seat, in which the damping mechanism of the invention is also applicable. - The object of the invention relates to a damping mechanism, intended for smoothing the movement of the tilting seats in chairs towards the vertical folded position for the purpose of preventing said tilting seats from abruptly bumping against the corresponding backrest of the chair.
- Said mechanism can be applied in chairs the seat (1) of which is arranged in an articulated assembly by means of rotating shafts (2), with the possibility of tilting between a horizontal use position and a vertical folded position against the corresponding backrest (3) of the chair, incorporating in relation to said articulated assembly springs (4) which act in the sense of lifting the seat (1) towards the vertical folded position.
- The rotating shafts (2) are fixedly attached to the seat (1) and on each of them there is arranged an eccentric cam (5), incorporated so that it rotates integrally with the corresponding shaft (2), so that when tilting the seat (1) the shafts (2) rotate with it, in turn moving the eccentric cams (5) together in the same rotational movement.
- In relation to the eccentric cams (5), there are arranged hydraulic damping pistons (6), i.e., they have a rod which can shift axially in movement controlled by a viscous liquid which has to pass through a narrow hole, supporting said damping pistons (6) radially against the outer surface of the respective eccentric cam (5).
- Thus, when the seat (1) is in the vertical folded position, in order to lower it to the horizontal use position it must be forced against the action of the springs (4), rotating the eccentric cams (5) during this tilting in the sense of supporting them, from the part of larger radius towards the part of smaller radius, on the damping pistons (6), which allows said damping pistons (6) to be extended without exerting any influencing action on the tilting of the seat (1).
- However, when the seat (1) is vacated in the horizontal use position, when the user who was sitting gets up, said seat is actuated by the springs (4) towards the vertical position, tending to tilt quickly, so that during the rotation, the eccentric cams (5) travel with their periphery, from the part of smaller radius towards the part of larger radius, borne against the damping pistons (6), forcing them to contract, and thereby causing a damping effect which smoothes the tilting speed due to the retention exerted by the damping pistons (6), since the hydraulic effect thereof forces their contraction to be slow, whereby the seat (1) reaches the stop of the lifting, against the backrest (3), without abruptly bumping against it it.
- The damping mechanism of the invention according to the described features can be applied in any chair with a tilting seat (1), such as those depicted in
Figures 5 and6 , which are non-limiting examples.
Claims (3)
- A damping mechanism for folding seats in chairs, said mechanism comprising rotating shafts (2) fixable to the seat for arranging the seat (1) in an articulated assembly, said rotating shafts (2) having springs (4) for tilting the seat (1) towards a vertical folded position, characterized in that there is incorporated in each rotating shaft (2) an eccentric cam (5) rotating integrally with the respective shaft (2), and a damping piston (6) radially bearing against the periphery of said eccentric cam (5), which piston (6) exerts a retention action on the eccentric cam (5) for smoothing the upward tilting of the seat (1) actuated by the action of the operating springs (4).
- The damping mechanism for folding seats in chairs according to claim 1, characterized in that the eccentric cams (5) are arranged on the shafts (2) so as to bear said eccentric cams (5) with their periphery against the respective damping piston (6) from the part of smaller radius towards the part of larger radius through the upward rotation of the seat (1) towards the vertical position.
- The damping mechanism for folding seats in chairs according to claims 1 or 2, characterized in that the damping pistons (6) which act against the eccentric cams (5) are hydraulic.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200901679A ES2356216B1 (en) | 2009-07-29 | 2009-07-29 | MECHANISM CUSHION OF FOLDING SEATS OF ARMCHAIRS. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2281487A1 EP2281487A1 (en) | 2011-02-09 |
EP2281487B1 true EP2281487B1 (en) | 2012-09-19 |
Family
ID=42938406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10171321A Active EP2281487B1 (en) | 2009-07-29 | 2010-07-29 | Damping mechanism for folding seats in chairs |
Country Status (5)
Country | Link |
---|---|
US (1) | US7950507B2 (en) |
EP (1) | EP2281487B1 (en) |
CN (1) | CN101986957B (en) |
BR (1) | BRPI1002774A2 (en) |
ES (1) | ES2356216B1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0812972D0 (en) * | 2008-07-15 | 2008-08-20 | Ove Arup & Partners Internat Ltd | Seating |
US9526340B2 (en) * | 2014-03-02 | 2016-12-27 | Frederick JACOBS | Rocker style chairs, modular components for use within rocker style chairs and parts for use within the modular components |
US8109564B2 (en) * | 2010-02-03 | 2012-02-07 | Mei Chuen Lin | Seat self-lifting device for portable chair |
CN102204759B (en) * | 2011-05-17 | 2014-03-19 | 长春富维—江森自控汽车饰件系统有限公司 | Seat turnover mechanism |
KR101688174B1 (en) * | 2015-09-24 | 2016-12-20 | 주식회사 신양씨앤에스 | Folding chair having friction damping part |
CA3050982C (en) * | 2016-01-22 | 2024-01-16 | Developpements Lafond Et Reid Inc. | Hinged step for small person |
CN106361034B (en) * | 2016-11-10 | 2023-06-23 | 中车唐山机车车辆有限公司 | Self-balancing seat |
JP6923356B2 (en) * | 2017-05-09 | 2021-08-18 | 株式会社オカムラ | Support structure of fixture components and fixtures equipped with it |
WO2018207805A1 (en) * | 2017-05-09 | 2018-11-15 | 株式会社オカムラ | Support structure for fixture forming member, and fixture provided with same |
ES2723604A1 (en) * | 2018-02-22 | 2019-08-29 | Figueras Seating Solutions S L | FOLDING CHAIR (Machine-translation by Google Translate, not legally binding) |
CN108938251B (en) * | 2018-09-04 | 2024-01-09 | 江苏赛康医疗设备股份有限公司 | Self-buffering medical bed board assembly |
JP2022508974A (en) * | 2018-10-26 | 2022-01-19 | リード,フレデリック | Self-retracting step |
KR101995759B1 (en) * | 2018-11-02 | 2019-07-03 | 주식회사 호수산업 | Folding Seats |
US11498684B2 (en) * | 2018-12-19 | 2022-11-15 | Ami Industries, Inc. | Self-stowage assembly for a seat |
GB2587835B (en) * | 2020-04-30 | 2023-03-15 | Ds Constructions Ltd | Seat assembly |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2114165A5 (en) * | 1970-11-18 | 1972-06-30 | Compin Ets | |
JPH0678703B2 (en) * | 1989-05-02 | 1994-10-05 | スガツネ工業株式会社 | Damper for flap door using viscous fluid |
GB2261914B (en) * | 1991-11-28 | 1995-08-30 | Jebron Ltd | Damper and method of controlling a door |
ES2089405T3 (en) * | 1992-07-08 | 1996-10-01 | Sugatsune Kogyo | SHOCK ABSORBER DEVICE FOR AUTOMATIC FOLDING ARMCHAIR. |
US5465817A (en) * | 1992-11-27 | 1995-11-14 | Muscatell; Ralph P. | Hydraulic brake pump with eccentric cam and reciprocating piston |
FR2790927B1 (en) * | 1999-03-17 | 2001-06-01 | Delagrave | TILT SEAT SEAT |
ES1042368Y (en) * | 1999-03-22 | 2000-01-16 | Figueras International Seating | ARMCHAIR WITH FOLDING SEAT. |
CA2397289C (en) * | 2000-10-30 | 2008-08-05 | Sugatsune Kogyo Co., Ltd. | Rotary damper |
US6442795B1 (en) * | 2001-01-16 | 2002-09-03 | Girefa Enterprise Co., Ltd. | Damper for a pivot door |
FR2863842B1 (en) * | 2003-12-17 | 2006-11-24 | Quinette Gallay | SEAT WITH A HIGH-STANDING SEAT, ESPECIALLY FOR A SHOWROOM |
ES1062273Y (en) * | 2006-02-16 | 2006-09-16 | Figueras Int Seating Sa | PERFECTED ARMCHAIR |
CN101347292B (en) * | 2007-07-16 | 2010-09-15 | 费卡洛斯国际座椅设备公司 | Chair with folding seat section |
-
2009
- 2009-07-29 ES ES200901679A patent/ES2356216B1/en active Active
-
2010
- 2010-07-23 US US12/842,117 patent/US7950507B2/en not_active Expired - Fee Related
- 2010-07-27 BR BRPI1002774-2A patent/BRPI1002774A2/en active Search and Examination
- 2010-07-28 CN CN201010243132.9A patent/CN101986957B/en active Active
- 2010-07-29 EP EP10171321A patent/EP2281487B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2281487A1 (en) | 2011-02-09 |
ES2356216A1 (en) | 2011-04-06 |
US20110024246A1 (en) | 2011-02-03 |
ES2356216B1 (en) | 2012-02-10 |
US7950507B2 (en) | 2011-05-31 |
CN101986957B (en) | 2015-06-03 |
BRPI1002774A2 (en) | 2012-04-03 |
CN101986957A (en) | 2011-03-23 |
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